This question is from the book Abstract Algebra: Theory and Applications by Thomas W. Judson.
Chapter 1 – Question 4
Prove $A \cup \emptyset = A$ and $A \cap \emptyset = \emptyset$.
This question is from the book Abstract Algebra: Theory and Applications by Thomas W. Judson.
Prove $A \cup \emptyset = A$ and $A \cap \emptyset = \emptyset$.